From 62a879b69415557a15d464842915030d6936d1bd Mon Sep 17 00:00:00 2001
From: roytam1 <roytam@gmail.com>
Date: Wed, 19 Jan 2022 10:11:44 +0800
Subject: [PATCH] Bug 1746011 - Handle truncated ADTS stream. r=bryce, a=RyanVM

---
 dom/media/ADTSDemuxer.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dom/media/ADTSDemuxer.cpp b/dom/media/ADTSDemuxer.cpp
index 89148ce241..cc68a34947 100644
--- a/dom/media/ADTSDemuxer.cpp
+++ b/dom/media/ADTSDemuxer.cpp
@@ -819,8 +819,9 @@ ADTSTrackDemuxer::Read(uint8_t* aBuffer, int64_t aOffset, int32_t aSize)
 
   const int64_t streamLen = StreamLength();
   if (mInfo && streamLen > 0) {
+    int64_t max = streamLen > aOffset ? streamLen - aOffset : 0;
     // Prevent blocking reads after successful initialization.
-    aSize = std::min<int64_t>(aSize, streamLen - aOffset);
+    aSize = std::min<int64_t>(aSize, max);
   }
 
   uint32_t read = 0;